<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="../libs/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="../libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="../libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <title>Title</title>
</head>
<body>

<h2>创建模态框（Modal）</h2>
<!-- 按钮触发模态框 -->
<button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">开始演示模态框</button>
<!-- 模态框（Modal） -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
    <div class="modal-dialog">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                <h4 class="modal-title" id="myModalLabel">模态框（Modal）标题</h4>
            </div>
            <div class="modal-body">在这里添加一些文本</div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
                <button type="button" class="btn btn-primary">提交更改</button>
            </div>
        </div><!-- /.modal-content -->
    </div><!-- /.modal -->
</div>

<button onclick="abc();">CLICK ME</button>
<button onclick="f_abc1();">清空CLICK ME</button>
<div id="abc1"></div>
abc
<button style="padding: 10px;">ABC</button>
<div class="btn btn-warning">一二三</div>
<div class="btn btn-danger">一二三</div>
<script>
    var a = 1;


    function abc() {
        if (a == 1) {
            a = 0;
        } else if (a == 0) {
            a = 1;
        }
        $('#abc1').empty();
        $('#abc1').append(a);
    }
    function f_abc1() {
        document.getElementById("abc1").innerHTML = "";
    }
</script>

</body>
</html>